takeoff /ˈteikˈɔ:f]/ n. [u] (飞机的)起飞，(航天器的)升空：economic takeoff 经济起飞 The plane crashed shortly after takeoff.飞机起飞后不久便坠毁了。When all the instruments had been checked out, the pilot signalled that he was ready for takeoff.所有仪表都检查过之后，驾驶员发出起飞准备就绪的信号。